- vsnet-alert - ooruri.kusastro.kyoto-u.ac.jp

[vsnet-alert 27508] Re: ASASSN-23bn
by Taichi Kato 12 Mar '23

12 Mar '23

Re: ASASSN-23bn ATLAS detection. YYYYMMDD(UT) mag observer 20230309.0735 14.057o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230309.0771 14.040o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230309.0820 14.051o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230309.0920 14.051o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230310.8416 14.489o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230310.8452 14.455o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230310.8521 14.507o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505))

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[vsnet-alert 27507] Re: Gaia23bbc
by Taichi Kato 12 Mar '23

12 Mar '23

Re: Gaia23bbc After combination with ATLAS data. Likely SS Cyg star. YYYYMMDD(UT) mag observer 20230220.1833 19.156c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230220.1865 18.868c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230220.2215 18.788c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230220.2295 18.984c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230221.0989 <17.715g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230221.1002 <17.479g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230221.1015 <17.413g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230222.2501 <17.443g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230222.2513 <17.433g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230222.2526 <17.577g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230222.9138 18.183o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230222.9170 18.029o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230222.9224 18.091o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230222.9340 18.076o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230223.1804 <17.622g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230223.1817 <17.494g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230223.1830 <17.609g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230224.0663 19.092c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230224.0686 19.137c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230224.0714 18.761c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230224.0852 18.951c (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230224.1146 <17.609g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230224.1159 <17.554g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230224.1172 <17.523g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230224.1500 <17.590g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230224.1512 <17.569g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230224.1525 <17.501g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230225.1787 <17.510g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230225.1800 <17.611g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230225.1812 <17.403g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230225.1974 <17.535g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230225.1987 <17.452g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230225.2000 <17.432g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230226.1785 <17.461g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230226.1797 <17.673g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230226.1810 <17.452g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230228.0328 <16.891g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230228.0341 <16.856g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230228.0354 <17.004g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230228.1061 18.025o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230228.1093 18.003o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230228.1165 18.352o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230228.1516 18.113o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230301.1279 <17.064g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230301.1292 <17.204g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230301.1305 <16.952g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230301.1543 <17.164g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230301.1555 <17.062g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230301.1568 <17.018g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230302.1545 <16.805g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230302.1558 <16.939g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230302.1570 <16.833g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230302.8822 18.237o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230302.8937 18.137o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230302.8973 18.134o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230302.9027 17.919o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230303.2580 <16.473g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230303.2592 <16.661g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230303.2605 <16.724g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230304.1407 18.071o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230304.1434 18.245o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230304.1489 18.132o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230304.1642 17.919o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230304.2008 <16.336g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230304.2021 <16.349g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230304.2034 <16.233g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230307.1484 <15.756g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230307.1496 <15.778g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230307.1509 <15.783g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230307.2582 <15.609g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230307.2594 <15.736g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230308.0945 15.571o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230308.1191 15.611o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230308.1222 15.602o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230308.1281 15.596o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230308.9867 15.336g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230308.9879 15.367g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230308.9892 15.496g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230309.9629 15.064o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230309.9661 15.054o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230309.9760 15.090o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230309.9883 15.066o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230310.9342 14.729o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230310.9374 14.685o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230310.9434 14.629o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230311.2782 14.554g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230311.2794 14.516g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230311.2807 14.566g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230311.7886 14.389g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230311.7899 14.390g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017)) 20230311.7911 14.384g (ASAS-SN survey (Shappee+ 2014; Kochanek+ 2017))

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[vsnet-alert 27504] ASASSN-23bn
by Taichi Kato 12 Mar '23

12 Mar '23

ASASSN-23bn Bright, large-amplitude transient. ASASSN-23bn --- ------- 7:31:22.43 -45:54:47.6 2023-03-8.88 13.45 SDSS DSS VIZIER ------- CV candidate, no Vizier match, g>17.2 on 2023-03-07.14, g=14.1 on 2023-03-08.25, g=13.8 on 2023-03-08.89.

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[vsnet-alert 27503] NSV 3734 fading
by Taichi Kato 12 Mar '23

12 Mar '23

NSV 3734 fading http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23bbb/ Gaia23bbb AT2023cwc 2023-03-08 02:13:34 116.73117 -9.57521 15.53 13.74 0.09 unknown 2023-03-10 17:42:05 ~1.5 mag dimming in known CV NSV 3734 ATLAS data also recorded slow fading starting from 2022 Nov. No past fading episode in ATLAS, and ASAS-3.

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[vsnet-alert 27502] Rybka2 possible superoutburst
by Taichi Kato 10 Mar '23

10 Mar '23

Rybka2 possible superoutburst UGSU:+E http://gsaweb.ast.cam.ac.uk/alerts/alert/Gaia23bao/ Gaia23bao AT2023cuw 2023-03-07 04:14:12 337.90592 40.49537 17.10 19.53 1.06 CV 2023-03-09 09:48:25 outburst in known CV Rybka 2 Last superoutburst in 2022 July and supercycle about 300 d (ATLAS data).

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[vsnet-alert 27501] Wils_SDSSJ074859.55+312512.6 superoutburst
by Taichi Kato 08 Mar '23

08 Mar '23

Wils_SDSSJ074859.55+312512.6 superoutburst UGSU+E YYYYMMDD(UT) mag observer 20230305.5949 <156c (Yutaka Maeda) 20230306.0679 15.595o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.0768 15.568o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.0799 15.633o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.0998 15.721o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.3344 15.847o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.3550 15.570o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.6215 <149c (Yutaka Maeda)

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[vsnet-alert 27500] MASTER OT J055845.55+391533.4: oscillation-type rebrightening
by Taichi Kato 08 Mar '23

08 Mar '23

MASTER OT J055845.55+391533.4: oscillation-type rebrightening Itoh-san, Kiyota-san and Vihorlat Observatory team have reported further observations. This object shows oscillation-type rebrightening after the dips. This feature was also present in the past ATLAS data. Strange object.

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[vsnet-alert 27499] Re: Wils_SDSSJ075107.50+300628.4: likely superoutburst
by Taichi Kato 08 Mar '23

08 Mar '23

Re: Wils_SDSSJ075107.50+300628.4: likely superoutburst > Almost superoutburst-only object with a short supercycle. > Superoutburst? in 2022 Oct. Indeed very likely for both. Very few normal outbursts were recorded in ATLAS despite the short supercycle. YYYYMMDD(UT) mag observer 20230302.5894 <156c (Yutaka Maeda) 20230304.5793 <151c (Yutaka Maeda) 20230305.5957 144c (Yutaka Maeda) 20230306.3344 15.172o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.3550 15.124o (ATLAS Forced Photometry (Tonry+2018, PASP 130, 064505)) 20230306.6223 149:c (Yutaka Maeda)

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[vsnet-alert 27498] Re: Gaia23azk
by Taichi Kato 08 Mar '23

08 Mar '23

Re: Gaia23azk No past activity in ASAS-SN/ATLAS. https://asas-sn.osu.edu/sky-patrol/coordinate/9c515a17-75cd-480d-98e9-f5a7c…

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[vsnet-alert 27497] ASASSN-15cv bright outburst?
by Taichi Kato 08 Mar '23

08 Mar '23

ASASSN-15cv bright outburst? Short outburst in 2019. YYYYMMDD(UT) mag observer 20230303.978 <16.30C (Gary Poyner) 20230303.9795 <162cG (Masao Funada) 20230304.5094 <158c (Yutaka Maeda) 20230305.5258 <157c (Yutaka Maeda) 20230306.5525 148:cG (Yutaka Maeda)

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